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Grain size dependent magnetoelectric coupling of BaTiO3 nanoparticles

机译:BATIO3纳米粒子的晶粒尺寸依赖性磁电耦合

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We report the magnetoelectric (ME) coupling properties of BaTiO _(3) nanoparticles of different grain sizes ranging from 16–26 nm synthesized using a modified Pechini method. Nanostructured multiferroic BaTiO _(3) shows good ferroelectric and magnetic properties at room temperature, which is confirmed using temperature dependent dielectric spectroscopy and a magnetometer. A quantitative magnetoelectric coefficient measurement of BaTiO _(3) samples at room temperature was performed using the dynamic lock-in amplifier technique. The obtained magnetoelectric coefficient values of all the samples indicate the occurrence of strong magnetoelectric coupling and the maximum recorded at an AC magnetic field of 77 Oe is 32 mV cm ~(?1) Oe ~(?1) and exhibits size-dependent magnetoelectric coupling. This enhanced room temperature ME voltage coefficient with perfect ME anisotropy provides the possibility for using such a material in low energy consumption or miniaturized device applications in the area of sensors and memory devices.
机译:我们报告了使用改性的Pechini方法合成的16-26nm的不同粒度的BATIO _(3)纳米颗粒的磁电(ME)耦合性能。纳米结构的多体式BATIO _(3)在室温下显示出良好的铁电和磁性,其使用温度相关的介电光谱和磁力计确认。使用动态锁定放大器技术进行室温下BATIO _(3)样品的定量磁电系数测量。所获得的所有样品的磁电系数值表明发生强磁电耦合的发生,并且在77 OE的AC磁场处记录的最大值是32 mV cm〜(α1)OE〜(?1)并且呈现尺寸依赖性磁电联轴器。这种增强的室温ME电压系数具有完善的ME各向异性,提供了在传感器和存储器件区域中使用这种材料在低能量消耗或小型化设备应用中的可能性。

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